STHDMI002ABTR STMicroelectronics, STHDMI002ABTR Datasheet - Page 20

• Manufacturer Part Number: STHDMI002ABTR
• Description: IC SWITCH 2-1 HDMI WBAND TQFP48
• Manufacturer: STMicroelectronics

Specifications of STHDMI002ABTR

• Function: Switch
• Circuit: 1 x SPDT
• On-state Resistance: 7.5 Ohm
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-TQFP, 48-VQFP
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• For Use With: 497-8371 - BOARD EVAL HDMI $ VIDEO SWITCH
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-7991-2; STHDMI002ABTR

Application information
9
9.1
9.2
9.3
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Application information
Power supply sequencing
Proper power-supply sequencing is advised for all CMOS devices. It is recommended
to always apply V
Supply bypassing
Bypass each of the V
possible, with the smaller-valued capacitor as close to the V
Differential traces
The high-speed TMDS inputs are the most critical parts for the device. There are several
considerations to minimize discontinuities on these transmission lines between the connectors
and the device.
Output trace characteristics affect the performance of the STHDMI002A. Use controlled
impedance traces to match trace impedance to both the transmission medium impedance and
termination resistor. Run the differential traces close together to minimize the effects of the
noise. Reduce skew by matching the electrical length of the traces. Avoid discontinuities in the
differential trace layout. Avoid 90 degree turns and minimize the number of vias to further
prevent impedance discontinuities.
a)
b)
c)
d)
Maintain 100-Ω differential transmission line impedance into and out of the
STHDMI002A.
Keep an uninterrupted ground plane below the high-speed I/Os.
Keep the ground-path vias to the device as close as possible to allow the shortest
return current path.
Layout of the TMDS differential inputs should be with the shortest stubs from the
connectors.
CC
CC
before applying any signals to the input/output or control pins.
pins with 0.1µF and 1nF capacitors in parallel as close to the device as
CC
pin of the device as possible.
STHDMI002A